main.py

def main():
    import sys

    def power_four(n):
        return n * n * n * n

    def process_test_case(numbers, index, acc):
        if index >= len(numbers):
            return acc
        if numbers[index] > 0:
            return process_test_case(numbers, index + 1, acc)
        return process_test_case(numbers, index + 1, acc + power_four(numbers[index]))

    def handle_test_case(lines, index, results):
        if index >= len(lines):
            return results

        x_line = lines[index]
        nums_line = lines[index + 1] if index + 1 < len(lines) else ""
        try:
            x = int(x_line)
            numbers = list(map(int, nums_line.strip().split()))
        except:
            return handle_test_case(lines, index + 2, results + [-1])

        if len(numbers) != x:
            result = -1
        else:
            result = process_test_case(numbers, 0, 0)

        return handle_test_case(lines, index + 2, results + [result])

    input_lines = sys.stdin.read().strip().splitlines()

    if not input_lines:
        return

    try:
        n = int(input_lines[0])
    except:
        return

    output = handle_test_case(input_lines[1:], 0, [])
    for value in output:
        print(value)


if __name__ == "__main__":
    main()

HENNGE Backend Challenge Solution